Just got the iGen4000DFc, filled it with oil, hooked it up to propane and it started right up. Added a heat gun for a load and cycled it on and off about a half and the machine handled it just fine. I'll be running it a bunch over the next couple of weeks to get through break in so it's ready for our camping trip the spring. Runs pretty quit too. It should do the job well.
I've only run it a few hours. Putting it together self explanatory except for maybe reconnecting the battery cables that were disconnected for transport. After following instructions eg input of oil and topping off battery charge, connected to propane, used key fob and it started easily afterv 2 or 3 tries. Maybe not as quiet as my honda but it wasn't in eco mode and it has double the watts.